Author Topic: Solder paste/flux manual syringe applicator  (Read 73504 times)

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Offline 0xdeadbeef

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Re: Solder paste/flux manual syringe applicator
« Reply #275 on: May 01, 2016, 08:54:56 AM »
Just stumbled over this kickstarter campaign. It's actually meant as repair device for SLA printed stuff, but can be used for solder paste application as well:
https://www.kickstarter.com/projects/3dfacture/fixer-a-professional-3d-print-finish-repair-and-gl/description
Campaign is over though...
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Offline mike_58

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Re: Solder paste/flux manual syringe applicator
« Reply #276 on: May 01, 2016, 04:32:00 PM »
nice but larger than my and capacity of syringe is up to 2ml only (my is up to 15ml)
« Last Edit: May 01, 2016, 04:34:11 PM by mike_58 »
 

Offline dmmt40

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Re: Solder paste/flux manual syringe applicator
« Reply #277 on: May 02, 2016, 06:58:30 AM »
Hey what's up, wow it's nice to see lots of people creating projects and interested in dispensing, I'm right in the middle of manufacturing the first batch of my own design, I thought it was a very niche market but it's encouraging to see even that Kickstarter product got funded, now I'm more confident mine will sell too.

Anyway some comments on the Fixer3D:

First of all, volume. As mike pointed out, it's very small. Maybe not a big deal when using solder pastes but with adhesives you can go through a syringe quite quickly. It's definitely intended for occasional use only.

Then about UV curing, I actually have quite a bit of experience on this field (that's part of what I do for a living) and the main problem I see is the intensity of the LED, I think this will greatly limit the kind of  resins you can use and the total area.
When curing adhesives in two non-transparent "substrates" you need lots of light to cure all the way through. Having said that, since this is really just intended for repairs and maybe gluing some small parts I think it'll fine. Worst case scenario you'll have to let your parts out in the sun for a couple of minutes.

Another point, why do I need a computer for changing my dispensing parameters? any gain in usability from having it battery powered goes out the window when I have to mess around with the computer to fine tune the dispensing. I know it stores the settings in memory but it becomes a hurdle for the user when using it for the first time.

And finally, price. It's looks to be around 100-130$ which seems reasonable but when you consider that the sun can do the same job for free, and you can apply drops of resin directly from a normal syringe, the benefits to using this become smaller every time  :-\
My dispenser will be at the same price point but it's a far more flexible design, obviously it doesn't have a LED on the tip but actually I'm now interested to see if I can make a detachable add on for mine... :) anyway, 0xdeadbeef thanks for the tip!


« Last Edit: May 02, 2016, 07:01:45 AM by dmmt40 »
 

Offline mike_58

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Re: Solder paste/flux manual syringe applicator
« Reply #278 on: May 29, 2016, 06:11:14 PM »

Why would you need UV curing of solder paste on PCBs?
 

Offline dmmt40

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Re: Solder paste/flux manual syringe applicator
« Reply #279 on: June 01, 2016, 06:20:37 AM »
Quote
Why would you need UV curing of solder paste on PCBs?

I assume that question is for me, no of course you wouldn't apply UV light to solder paste although if you wanted to do conformal coating in your board then yes, you'd need UV light and resin.

No, the reason is that my dispenser also does adhesives, resins, etc (so exactly the same as the Fixer3D minus the led), anyway I actually think lots of people can benefit from a cheap adhesive dispenser, that's a big market that very few care or know about. That's also how I got interested in dispensing.
« Last Edit: June 01, 2016, 06:22:09 AM by dmmt40 »
 

Offline mike_58

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Re: Solder paste/flux manual syringe applicator
« Reply #280 on: June 01, 2016, 03:54:08 PM »
OK - so when I can see your concept ?  It is easy to find my contact email if you dont want publishing ..
 

Offline dmmt40

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Re: Solder paste/flux manual syringe applicator
« Reply #281 on: June 01, 2016, 04:30:08 PM »
Oh yeah  :) I've put the info already (even a video) on this post:
http://www.eevblog.com/forum/reviews/new-easy-to-use-solder-pasteadhesive-dispenser-design/

It's just a matter of days until I start selling it, a couple of people have shown interest already which is great we'll see how it goes.
 

Offline mahouny

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Re: Solder paste/flux manual syringe applicator
« Reply #282 on: June 11, 2016, 04:29:48 AM »
G'day!

I'm looking for a manual syringe tool so I can use solder paste or flux in the type of syringes as seen in attached image.

Any suggestions?

You can try this one, it's USB powered and IMHO better than manual dispensers.




« Last Edit: June 11, 2016, 06:44:22 AM by mahouny »
 

Offline Kjelt

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Re: Solder paste/flux manual syringe applicator
« Reply #283 on: June 11, 2016, 06:50:36 AM »
You can try this one, it's USB powered and IMHO better than manual dispensers.
Looking at that movie at 1.45 he pastes the microcontroller lqfp pads in 4 stripes, i never ever do that, that is gambling that the soldermask will defy the solderbridges during reflowing , perhaps with this spacing it works but at smaller spacings you get huge solderbridges.
Any one else with a different experience?
 

Offline mahouny

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Re: Solder paste/flux manual syringe applicator
« Reply #284 on: June 11, 2016, 07:44:23 AM »
Actually the solder paste stripes works pretty well on TQFP-32. 
Surface tension do the job ;) when reflowing PCB.
 

Offline mike_58

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Re: Solder paste/flux manual syringe applicator
« Reply #285 on: June 12, 2016, 06:33:51 PM »
New Version Dispenser V5 to be out on market soon:
http://wordpress.mencinger.biz/electronic-solder-paste-dispenser-v5-air-free/
and here some first tests:

Limited quantity !
 

Offline mike_58

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Re: Solder paste/flux manual syringe applicator
« Reply #286 on: June 17, 2016, 05:50:30 PM »
 

Offline Genaugmen

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Re: Solder paste/flux manual syringe applicator
« Reply #287 on: July 08, 2016, 10:03:56 AM »
Something like this...

10cc
http://www.digikey.co.nz/product-detail/en/SMDSG10CCR/SMDSG10CCR-ND/2638971

30cc
http://www.digikey.co.nz/product-detail/en/SMDSG30CCR/SMDSG30CCR-ND/4271879

Look up industrial syringes on Amazon. I just ordered a 10 pack within the last2 weeks. They're available with many different sized tips. It's always better to dispense a little more of that flux than too little.
Duda Energy
Syringepk010 Industrial Syringes
 

Offline ebclr

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Offline mike_58

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Re: Solder paste/flux manual syringe applicator
« Reply #289 on: September 26, 2016, 07:20:23 AM »
"It's always better to dispense a little more of that flux than too little."
Correct - for the guys who start with Dispensers - MIX solder paste with fresh flux -Add  5% of Flux on the volume of solder paste and your life will be much more comfortable with SMD-SMTs !!
Good exsample of good paste is here!

 

Offline Kjelt

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Re: Solder paste/flux manual syringe applicator
« Reply #290 on: September 26, 2016, 07:26:13 AM »
Correct me if i am wrong but it is not the flux that evaporates from the paste but the flux solvent being ipa, so add ipa to older paste not more flux.
 

Offline eliocor

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Re: Solder paste/flux manual syringe applicator
« Reply #291 on: September 26, 2016, 07:34:53 AM »
To me the term "flux" has always been too generic...
In the video what kind of "flux" is used to rejuvenate the solder paste?
Is the flux I'm currently using [Alpha NR215] just correct to do this operation?
 

Offline nanofrog

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Re: Solder paste/flux manual syringe applicator
« Reply #292 on: September 26, 2016, 04:09:58 PM »
Correct me if i am wrong but it is not the flux that evaporates from the paste but the flux solvent.
Yes; and it's cheaper too.  >:D

Additional flux will work though in a pinch.

FWIW, I saw there were still remaining chunks in the paste he mixed, which could pose a problem (i.e. clog up a syringe/needle, gunk up a stencil opening, or cause a bad joint if it's not caught before reflow.

To me the term "flux" has always been too generic...
In the video what kind of "flux" is used to rejuvenate the solder paste?
Is the flux I'm currently using [Alpha NR215] just correct to do this operation?
Yes, so long as the flux type used is the same.  :) Some no-clean fluxes will mix with rosin based fluxes, but don't mix no-clean with water soluble.

That said however, you really only need to add solvent, such as alcohol or acetone.
 

Offline mike_58

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Re: Solder paste/flux manual syringe applicator
« Reply #293 on: September 26, 2016, 05:13:52 PM »
« Last Edit: September 26, 2016, 05:16:37 PM by mike_58 »
 

Offline mike_58

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Re: Solder paste/flux manual syringe applicator
« Reply #294 on: September 28, 2016, 05:16:38 AM »
....
« Last Edit: October 16, 2016, 04:03:29 AM by mike_58 »
 

Offline xebbmw

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Re: Solder paste/flux manual syringe applicator
« Reply #295 on: January 03, 2017, 11:34:43 PM »
@mike_58: where did you get your motor shaft coupler for the version 5?

I was looking into creating a similar coupler by using a standoff but standoffs are not fully threaded usually.
 

Offline mike_58

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Re: Solder paste/flux manual syringe applicator
« Reply #296 on: January 04, 2017, 12:34:11 AM »
You can buy probaby a fully treaded bar and cut it to size you need...
 


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